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The development of platinum-group minerals in laterites
Economic Geology, 1986Consideration of chloride complexes with the platinum-group elements (Fuchs and Rose, 1974; Westland, 1981) has shown that they can enter into solution at low temperatures under acid conditions with a high Eh. Complexes may also be formed with other ligand ions or soil colloids under similar conditions.
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First find of nephrite with accessory minerals of the platinum group
Doklady Earth Sciences, 2017The relic minerals of the platinum group (MPG) were found for the first time in nephrite of tremolite–diopside composition associated genetically with the boninite dike of the Gorlyk-Gol deposit. This latter is confined to a segment of the zone of serpentinite melange in the southern part of the Ospinsko–Kitoi ultrabasite massif in the East Sayan ...
A. V. Tatarinov +3 more
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Platinum-group minerals in the Hitura nickel deposit, Finland
Economic Geology, 1976The northern part of the Hitura serpentinite-peridotite body contains Ni-Cu mineralization whose grade is highest in the contact zone. Pt metals average 0.027 g/ton Pt and 0.048 g/ton Pd in the ultramafic body. A detailed microscopic, microprobe, and analytical study of the Pt metals and minerals reveals that sperrylite is the only independent Pt ...
T. A. Hakli +3 more
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A key-diagram for the optical determination of platinum-group minerals
TMPM Tschermaks Mineralogische und Petrographische Mitteilungen, 1984A key-diagram for optical routine investigation of platinum-group minerals has, for the first time, been developed on the basis of the most recent reflectance and microhardness data. The diagram contains 65 minerals, which occupy defined fields. The dominating platinum metal present in the respective minerals has been characterized by giving eachPGE a ...
M. Tarkian, H.-J. Bernhardt
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Platinum-group minerals from the Troodos ophiolite, Cyprus
Mineralogy and Petrology, 1990Platinum-group minerals have been identified in chromitites from the Troodos ophiolitic complex of Cyprus. The host chromitites occur as podiform bodies within the basal harzburgite of the ophiolite, as occasional discontinuous layers in the dunites at the base of the overlying cumulate sequence and rarely as minor schlieren in clinopyroxene dunites at
B McElduff, E. F. Stumpfl
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Compositional variations and reflectance of the common platinum-group minerals
Mineralogy and Petrology, 1987A detailed study of the compositional variations of 22 different platinum-group minerals, of Os-Ir-Ru- and Pt-Fe alloys, Pt-Pd- and Ru-Os-Ir sulfides, RhIr-Pt sulfarsenides and Pd-Pt tellurides from various deposits resulted in verification of extensive solid solution series and element substitution within different mineral groups.
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Platinum-group minerals within the Ballantrae Complex, SW Scotland
Scottish Journal of Geology, 2004Synopsis Platinum-group minerals (PGM) are present within the chromitites of the northern serpentinite belt (Pinbain Bridge area) of the ophiolitic Ballantrae Complex. A relatively uncommon but moderately diverse PGM assemblage is dominated by small (<10 μm) Ir-, Os-, or Ru-bearing phases including laurite (RuS 2
M. R. Power, D. Pirrie
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Platinum-group minerals in chromite seams of the Stillwater Complex, Montana
Economic Geology, 1986Platinum-group minerals are present as inclusions in both disseminated and massive chromite but are modally more abundant in massive chromite, in the ultramafic zone of the Stillwater Complex. They are small, generally less than 20 mu in diameter and characterized by euhedral and subhedral habits.
Raymond W. Talkington, Bruce R. Lipin
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Platinum‐group element mineralization in the Suhanko‐Konttijärvi intrusion, Finland
Australian Journal of Earth Sciences, 1992Igneous activity of ca 2440 Ma in the Suhanko‐Konttijarvi area began with the formation of pre‐intrusion dykes followed by the intrusion of the Suhanko‐Konttijarvi intrusion proper. The two magma pulses differed from each other in their chemical composition, the former being clearly richer in chromium and magnesium and interpreted as a boninitic‐type ...
M. J. Iljina +2 more
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Mineralogy of platinum-group minerals in the Witwatersrand, South Africa
Economic Geology, 1976Approximately 80 percent of the platinum-group mineral grains in the Precambrian Witwatersrand conglomerate reefs are (Ir, Os, Ru) alloys. Osmium, iridosmine, osmiridium, and iridium are most abundant; rutheniridosmine, ruthenosmiridium, and ruthenian iridium are less abundant. Zoned grains are common, with Os-rich cores enclosed by (Ir, Pt)-rich outer
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